pic32mx320f032h Microchip Technology Inc., pic32mx320f032h Datasheet - Page 25

• Manufacturer Part Number: pic32mx320f032h
• Description: 64/100-pin General Purpose And Usb 32-bit Flash Microcontrollers
• Manufacturer: Microchip Technology Inc.

3.3
The PIC32MX3XX/4XX Family core offers a number of
power management features, including low-power
design, active power management, and power-down
modes of operation. The core is a static design that
supports slowing or halting the clocks, which reduces
system power consumption during idle periods.
3.3.1
The mechanism for invoking power-down mode is
through execution of the WAIT instruction. For more
information on power management, see Section 25.0
“Power-Saving Features”.
3.3.2
The majority of the power consumed by the
PIC32MX3XX/4XX Family core is in the clock tree and
clocking registers. The PIC32MX family uses extensive
use of local gated-clocks to reduce this dynamic power
consumption.
© 2009 Microchip Technology Inc.
Power Management
INSTRUCTION-CONTROLLED
POWER MANAGEMENT
LOCAL CLOCK GATING
Preliminary
3.4
The PIC32MX3XX/4XX Family core provides for an
Enhanced JTAG (EJTAG) interface for use in the
software debug of application and kernel code. In
addition to standard user mode and kernel modes of
operation, the PIC32MX3XX/4XX Family core provides
a Debug mode that is entered after a debug exception
(derived from a hardware breakpoint, single-step
exception, etc.) is taken and continues until a debug
exception return (DERET) instruction is executed.
During this time, the processor executes the debug
exception handler routine.
The EJTAG interface operates through the Test Access
Port (TAP), a serial communication port used for
transferring
PIC32MX3XX/4XX Family core. In addition to the
standard JTAG instructions, special instructions
defined in the EJTAG specification define what
registers are selected and how they are used.
PIC32MX3XX/4XX
EJTAG Debug Support
test
data
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DS61143F-page 23
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